package com.changgou.file.controller;

import com.changgou.entity.Result;
import com.changgou.entity.StatusCode;
import com.changgou.file.utils.FastDFSClient;
import com.changgou.file.utils.FastDFSFile;
import org.apache.commons.lang.StringUtils;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.multipart.MultipartFile;

@RestController
@RequestMapping("/file")
public class FileController {
    @PostMapping("/upload")
    public Result uploadFile(MultipartFile file){
        try{
            //判断文件是否存在
            if(file==null){
                throw new RuntimeException("文件不存在");
            }
            //获取文件的完整名称
            String filename = file.getOriginalFilename();
            if(StringUtils.isEmpty(filename)){
                throw new RuntimeException("文件不存在");

            }
            //获取文件的扩展名称  abc.jpg   jpg
            String extName = filename.substring(filename.lastIndexOf(".") + 1);
            //获取文件内容
            byte[] bytes = file.getBytes();
            //创建文件上传的封装实体类
            FastDFSFile fastDFSFile = new FastDFSFile(filename, bytes, extName);
            //基于工具类进行文件上传,并接受返回参数  String[]
            String[] upload = FastDFSClient.upload(fastDFSFile);
            //封装返回结果
            String url = FastDFSClient.getTrackerUrl()+upload[0]+"/"+upload[1];
            return new Result(true, StatusCode.OK,"文件上传成功",url);
        }catch (Exception e){
            e.printStackTrace();
        }
        return new Result(false, StatusCode.ERROR,"文件上传失败");
    }
}
